Modification and Validation of an HPLC Method for Quantification of Piroxicam

Muthanna F. Abdulkarim, Ghassan Z. Abdullah, M.H.F. Sakeena, Mallikarjun Chitneni, Mun F. Yam, Elrashid S. Mahdi, Ibrahim M. Salman, Omar Z. Ameer, Munavvar A. Sattar, Mahiran Basri, Azmin M. Noor

Abstract


Piroxicam is a NSAID that is widely used in the treatment of joint pain and osteoarthritis. The objectives of the study were to modify and validate HPLC method so as to obtain an accurate, sensitive and precise method to quantify piroxicam concentrations without interference from the other ingredients presence in the formulation. The method published by Owen et al. was adapted and modified to suit the above requirements. The modification was carried out on the mobile phase as the mobile phase used by the authors was not able to separate the drug peak from the interference of the formulation excipients. The modified mobile phase consisted of 5 mM of disodium hydrogen phosphate adjusted to pH 3 with concentrated ortho phosphoric acid, methanol, acetonitrile and glacial acetic acid at ratios of 27:20:52:1 respectively. The method was validated and found to be specific, precise, accurate and reproducible even when run at different times of the same day or on different times on different days. The limit of detection and quantification were determined to be 0.035 μg/ml and 0.0625 μg/ml respectively. It could be concluded that this method could be used to determine piroxicam concentration in the samples collected from in vitro study of permeability through the synthetic membrane and excised rat skin.

Keywords: Piroxicam, HPLC, Quantification analysis, Modification.


Keywords


Piroxicam, HPLC, Quantification analysis, Modification.

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